package com.example.login.config;

import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;



public class LoginHandlerInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        Object loginUser = request.getSession().getAttribute("user");
        if (loginUser==null){
            request.setAttribute("msg","没有权限,请先登录!");
            request.getRequestDispatcher("/登录").forward(request,response);
            return false;
        }else{
            return true;
        }

    }
}